Briefly describe how PHP detects whether the apache mod_rewrite module is installed

This article mainly introduces the method of PHP detecting whether the apache mod_rewrite module is installed. This detection function is realized by detecting the related functions of the apache mod_rewrite module. Friends in need can refer to the following.

The example of this article tells the story of PHP Method to detect whether the apache mod_rewrite module is installed.

The specific implementation method is as follows:

/**
 * @title Check if Apache's mod_rewrite is installed.
 * 
 * @author Pierre-Henry Soria <ph7software@gmail.com>
 * @copyright (c) 2013, Pierre-Henry Soria. All Rights Reserved.
 * @return boolean
 */
function isRewriteMod()
{
  if (function_exists(&#39;apache_get_modules&#39;))
  {
    $aMods = apache_get_modules();
    $bIsRewrite = in_array(&#39;mod_rewrite&#39;, $aMods);
  }
  else
  {
    $bIsRewrite = (strtolower(getenv(&#39;HTTP_MOD_REWRITE&#39;)) == &#39;on&#39;);
  }
  return $bIsRewrite;
}

Usage method:

if (!isRewriteMod()) exit('Please install Apache mod_rewrite module.');

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